Species of Hexabothriidae (Monogenea) may have extensive distribution ranges reflecting multiple host species: evidence from three new South African records Author Vaughan, David B. 0000-0002-4914-5003 Coastal Marine Ecosystems Research Centre, Central Queensland University, Rockhampton, Queensland, Australia. d.b.vaughan@cqu.edu.au Author Christison, Kevin W. 0000-0001-9879-3405 Department of Forestry, Fisheries and Environment, Aquaculture Innovation and Technology Development, Cape Town, South Africa. http: // orcid. org / 0000 - 0001 - 9879 - 3405 & Department of Biodiversity and Conservation Biology, University of the Western Cape, Cape Town, South Africa. Author Hansen, Haakon 0000-0003-1400-9615 Norwegian Veterinary Institute, Fish Health Research Group, Pb 64, N- 1431 Ås, Norway. http: // orcid. org / 0000 - 0003 - 1400 - 9615 Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite & Disease Laboratory, School of Fisheries, Aquaculture, & Aquatic Sciences, College of Agriculture, Auburn University, 559 Devall Drive, Auburn, AL 36832, USA. Author Bullard, Stephen A. 0000-0002-4914-5003 Department of Zoology, School for Environmental Sciences and Development, North-West University, Private Bag X 6001, Potchefstroom, 2520, South Africa. https: // orcid. org / 0000 - 0001 - 6681 - 7724 d.b.vaughan@cqu.edu.au text Zootaxa 2023 2023-03-10 5254 2 151 180 http://dx.doi.org/10.11646/zootaxa.5254.2.1 journal article 233754 10.11646/zootaxa.5254.2.1 5ec5feba-d119-472c-8d9e-a20b6dd9453a 1175-5326 7727255 3B5279F6-8157-4DB1-BFE5-8391D7330D53

TABLE 1. Comparative measures for Erpocotyle catenulata

	Mustelus mustelus (Guberlet 1933)	Galeorhinus galeus (Brinkmann 1952; re- measured = §)	M. mustelus (Present study)	Galeorhinus galeus (Present study)
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Body
Total length	7000–11000	24870, 26160§	12077	10646
Body-proper length (excluding haptor)	—	9000, 22000–24000; 22734, 23954§	8035	8142
Maximum width	~1500	1165, 1196§	2121	2504
Haptor length	—	2329, 2348§	4042	3213
Haptor width	—	1389, 1645§	3724	3297
Haptoral appendix length	~2000	~2000; 1725§	3095	2647
Haptoral appendix width	~750	~750; 647§	939	855
Sucker of appendix length	—	530§	524	434
Sucker of appendix width	—	312§	337	318
Oral sucker length	—	725, 976§	624	566
Oral sucker width/diameter	~500	1100–1230; 1049, 1299§	784	757
Pharynx length	—	120–150; 126§	104	106
Pharynx width	~100a	100; 87§	130	116
Number of testes	50 or more	—	64	62
Testis diameter	—	—	82	93
Male copulatory organ total length	—	372, 477§	410	358
Male copulatory organ maximum width	100b	81, 89§	74	89
Cirrus length	250–300	310–360; 255, 311§	256	317
Ovary length	—	3588, 4387§	2368	2259
Seminal receptacle length	~600	840–910; 872, 961§	861	516
Seminal receptacle width	~100–200	300; 304, 316§	292	182
Ôtype length	—	838, 942§	813	731
Ôtype width	—	81, 87§	89	88
Uterus length	—	4608, 4822§	4223	4409
Egg length	127–141	130–140	—	165
Egg width	52–66	50	—	67
Hamulus
Total length	70–80	70–80	70	—
Total diameter	—	—	42	—
Hook point length	—	—	18	—
Hook shank length	—	—	13	—
Hook distal point width	—	—	3	—
Hook outer aperture angle	—	—	63°	—
Hook root-base angle	—	—	80°	—
Hook aperture	—	—	16	—
Hook shank-base width	—	—	7	—
Hook outer root-shaft length	—	—	57	—
Hook inner root-shaft length	—	—	49	—
Hook root-base width	—	—	42	—
Sucker sclerite 1
Circumference length	1800c	1300–1400; 1338, 1399§	1496	1381
Total length	—	622, 640§	743	673
Total diameter	—	441, 454§	478	457
Inner diameter	—	363, 364§	377	382
Shaft width	—	78, 88§	102	73
Shaft length	—	622, 647§	755	679
Hook-side curve length	—	100, 110§	111	106
Shaft-side curve length	—	144, 148§	149	135
Aperture	—	411, 428§	507	482
Hook length	—	112, 115§	98	86
Hook-curve length	—	6, 7§	6	6
Hook aperture	—	83, 90§	73	65
Hook base-width	—	32, 43§	36	32
Sucker sclerite 2
Circumference length	1800c	1300–1400; 1354, 1459§	1605	1391
Total length	—	624, 676§	764	667
Total diameter	—	448, 480§	523	460
Inner diameter	—	363, 387§	419	381
Shaft width	—	86, 92§	105	83
Shaft length	—	629, 674§	769	667
Hook-side curve length	—	107, 114§	115	108
Shaft-side curve length	—	148, 160§	165	135
Aperture	—	414, 435§	520	475
Hook length	—	119, 130§	97	77
Hook-curve length	—	9, 10§	6	5
Hook aperture	—	89, 101§	67	52
Hook base-width	—	41, 51§	42	28
Sucker sclerite 3
Circumference length	1636c	1100–1200; 1181, 1271§	1560	1358
Total length	—	573, 605§	728	639